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<ol class="breadcrumb">
  <li>类列表</li>
  <li>ExceptionsFilter</li>
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        <p class="comment">
            <h3>文件</h3>
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        <p class="comment">
            <code>server/src/common/aspects/exceptions.filter.ts</code>
        </p>



            <p class="comment">
                <h3>实现</h3>
            </p>
            <p class="comment">
                        <code>ExceptionFilter</code>
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            <section>
    <h3 id="index">索引</h3>
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                    <td class="col-md-4">
                        <h6><b>方法</b></h6>
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                        <ul class="index-list">
                            <li>
                                    <span class="modifier">Async</span>
                                <a href="#catch">catch</a>
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        方法
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                    <a name="catch"></a>
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                        <b>
                            <span class="modifier">Async</span>
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                    <code>catch(exception: unknown, host: ArgumentsHost)</code>
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                    <div class="io-line">被定义在 <a href="" data-line="8"
                            class="link-to-prism">server/src/common/aspects/exceptions.filter.ts:8</a></div>
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                        <b>参数列表 :</b>
                        <table class="params">
                            <thead>
                                <tr>
                                    <td>名称</td>
                                    <td>类型</td>
                                    <td>可选的</td>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td>exception</td>
                                    <td>
                                            <code>unknown</code>
                                    </td>

                                    <td>
                                        否
                                    </td>


                                </tr>
                                <tr>
                                    <td>host</td>
                                    <td>
                                            <code>ArgumentsHost</code>
                                    </td>

                                    <td>
                                        否
                                    </td>


                                </tr>
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                    </div>
                    <div class="io-description">
                        <b>返回 : </b>        <code><a href="https://www.typescriptlang.org/docs/handbook/basic-types.html" target="_blank" >any</a></code>

                    </div>
                    <div class="io-description">
                        
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    <div class="tab-pane fade  tab-source-code" id="c-source">
        <pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import * as Youch from &#x27;youch&#x27;;
import * as moment from &#x27;moment&#x27;;
import { Catch, ArgumentsHost, HttpException, ExceptionFilter, HttpStatus } from &#x27;@nestjs/common&#x27;;
import { Logger } from &#x27;../lib/logger&#x27;

@Catch()
export class ExceptionsFilter implements ExceptionFilter {
	async catch(exception: unknown, host: ArgumentsHost) {
		const ctx &#x3D; host.switchToHttp();
		const response &#x3D; ctx.getResponse();
		const request &#x3D; ctx.getRequest();

		Logger.error(&#x27;exception&#x27;, exception);
		Logger.error(request.headers.xhr);

		const timestamp &#x3D; moment().format(&#x27;YYYY-MM-DD HH:mm:ss&#x27;);

		if (exception instanceof HttpException) {
			const status &#x3D; exception.getStatus();
			Logger.error(&#x60;Catch http exception at ${request.raw.method} ${request.raw.url} ${status}&#x60;);

			response.code(status).header(&#x27;Content-Type&#x27;, &#x27;application/json; charset&#x3D;utf-8&#x27;).send({
				...exception,
				timestamp,
				path: request.url
			});
		} else {
			if (process.env.NODE_ENV !&#x3D;&#x3D; &#x27;production&#x27; &amp;&amp; !request.headers.xhr) {
				const youch &#x3D; new Youch(exception, request.raw);

				const html &#x3D; await youch
					.addLink(({ message }) &#x3D;&gt; {
						const url &#x3D; &#x60;https://cn.bing.com/search?q&#x3D;${encodeURIComponent(&#x60;[adonis.js] ${message}&#x60;)}&#x60;;
						return &#x60;&lt;a href&#x3D;&quot;${url}&quot; target&#x3D;&quot;_blank&quot; title&#x3D;&quot;Search on bing&quot;&gt;Search Bing&lt;/a&gt;&#x60;;
					})
					.toHTML();

				response.type(&#x27;text/html&#x27;);
				response.code(HttpStatus.INTERNAL_SERVER_ERROR).send(html);

			} else {
				response.code(HttpStatus.INTERNAL_SERVER_ERROR).header(&#x27;Content-Type&#x27;, &#x27;application/json; charset&#x3D;utf-8&#x27;).send({
					...exception,
					timestamp,
					path: request.url
				});
			}
		}

	}
}
</code></pre>
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